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authorKarl Berry <karl@freefriends.org>2006-11-01 23:50:14 +0000
committerKarl Berry <karl@freefriends.org>2006-11-01 23:50:14 +0000
commitbcec5cf9be8a366b39aab4c13fa9e455b6e724ca (patch)
tree10af70bab7eedf89d55be20d1a3b9c334ad80ea3 /Master/texmf-dist/doc/latex/beamer/beamerug-twoscreens.tex
parent8cdb9ebeb89ec677972e7a568938c6a0dd313145 (diff)
beamer update to get solutions/ et al. (reported by gerben)
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-% $Header: /cvsroot/latex-beamer/latex-beamer/doc/beamerug-twoscreens.tex,v 1.1 2004/12/08 11:21:23 tantau Exp $
-
-
-% Copyright 2003, 2004 by Till Tantau <tantau@users.sourceforge.net>.
-%
-% This program can be redistributed and/or modified under the terms
-% of the GNU Public License, version 2.
-
-
-\section{Taking Advantage of Multiple Screens}
-
-\label{section-twoscreens}
-
-This section describes options provided by \beamer\ for taking
-advantage of computers that have more than one video output and
-can display different outputs on them. For such systems, one video
-output can be attached to a projector and the main presentation is
-shown there. The second video output is attached to a small extra
-monitor (or is just shown on the display of the computer) and shows,
-for example, special notes for you. Alternatively, the two outputs
-might be attached to two different projectors. One can then show the
-main presentation on the first projection and, say, the table of
-contents on the second. Or the second projection might show a version
-translated into a different language. Or the seoncd projection might
-alwyas show the ``previous'' slide. Or \ldots---I am sure you can
-think of further useful things.
-
-The basic idea behind \beamer's support of two video outputs is the
-following: Using special options you can ask \beamer\ to create a
-\pdf-file in which the ``pages'' are unusually wide or high. By
-default, their height will still be 128mm, but their width will be
-192mm (twice the usual 96mm). These ``superwide'' pages will show
-the slides of the main presentation on the left and auxilliary
-material on the right (this can be switched using appropriate
-options, though hyperlinks will only work if the presentation is on
-the left and the second screen on the right).
-
-For the presentation you attach two screens to the system. The
-windowing system believe that the screen is twice as wide as it
-actually is. Everything the windowing system puts on the left half of
-this big virtual screen is redirected to the first video output,
-everything on the right half is redirected to the second video
-output.
-
-When the presentation program displays the specially prepared
-superwide \beamer-presentation, exactly the left half of the screen
-will be filled with the main presentation, the right part is filled
-with the auxilliary material---voilą. Not all presentation programs
-support this special feature. For example, the Acrobat Reader 6.0.2 will
-only use one screen in fullscreen mode on MacOS~X. You will have to
-find out for yourself whether your display program and system support
-showing superwise presentations stretching over two screens.
-
-\beamer\ uses the package |pgfpages| to typeset two-screen
-presentations. Because of this, your first step when creating a
-two-screen presentation is to include this package:
-\begin{verbatim}
-\documentclass{beamer}
-\usepackage{pgfpages}
-\end{verbatim}
-
-The next step is to choose an appropriate option for showing something
-special on the second screen. These options are discussed in the
-following sections.
-
-One of the things these options do is to setup a certain
-|pgfpages|-layout that is appropriate for two-screen
-presentations. However, you can still change hte |pgfpages|-layout
-arbitrarily, afterwards. For example, you might wish to enlarge the
-virtual pages. For details, see the documentation of |pgfpages|.
-
-
-\subsection{Showing Notes on the Second Screen}
-
-The first way to use a second screen is to show the presentation
-on the main screen and to show your notes on the second screen. The
-option |show notes on second screen| can be used for this. It is
-described on page~\pageref{command-notesonsecondscreen}.
-
-
-
-\subsection{Showing Second Mode Material on the Second Screen}
-
-The second way to use the second screen is to show ``a different
-vesion'' of the presentation on the second screen. This different
-version might be a translation or it might just always be the current
-table of contents.
-
-To specify what is shown on the second screen, you can use a special
-\beamer-mode called |second|. This mode behaves similar to modes like
-|handout| or |beamer|, but its effect depends on the exact options
-used:
-
-\begin{beameroption}{second mode text on second screen}{|=|\meta{location}}
- This option causes the second screen to show the second mode
- material. The \meta{location} of the second screen can be |left|,
- |right|, |bottom|, or |top|.
-
- In detail, the following happens: When a new frame needs to be
- typeset, \beamer\ checks whether the special option |typeset second|
- is given. If not, the frame is typeset normally and the slides are
- put on the main presentation screen (more precisely, on the logical
- |pgfpages|-page number zero). The second screen (logical page number
- one) shows whatever it showed before the frame was typeset.
-
- If the special frame option |typeset second| is given, after each
- slide of the frame the frame contents is typeset once more, but this
- time for the mode |second|. This results in another slide, which
- is put on the second screen (on logical page number one). Then the
- whole page is shipped out.
-
- The |second| mode behaves more like the |beamer| mode than
- other modes: Any overlay specification for |beamer| will also apply
- to |second| mode, unless an explicit |second| mode specification is
- also given. In particular, |\only<1-2>{Text}| will be shown on
- slides 1 and 2 in |second| mode, but only on the first slide in
- |handout| mode or |trans| mode.
-
- \example
-\begin{verbatim}
-\documentclass{beamer}
-\usepackage{pgfpages}
-\setbeameroption{second mode text on second screen}
-\begin{document}
-\begin{frame}[typeset second]
- This text is shown on the left and on the right.
- \only<second>{This text is only shown on the right.}
- \only<second:0>{This text is only shown on the left.}
-\end{document}
-\begin{frame}
- This text is shown on the left. The right shows the same as for the
- previous frame.
-\end{frame}
-\begin{frame}[typeset second]
- \alt<second>{The \string\alt command is useful for second
- mode. Let's show the table of contents, here: \tableofcontents}
- {Here comes some normal text for the first slide.}
-\end{frame}
-\end{document}
-\end{verbatim}
-
- \example The following example shows how translations can be added
- in a comfortable way.
-\begin{verbatim}
-\documentclass{beamer}
-\usepackage{pgfpages}
-\setbeameroption{second mode text on second screen}
-\DeclareRobustCommand\translation[1]{\mytranslation#1\relax}
-\long\def\mytranslation#1|#2\relax{\alt<second>{#2}{#1}}
-\title{\translation{Preparing Presentations|Vortr\"age vorbereiten}}
-\author{Till Tantau}
-\begin{document}
-\begin{frame}[typeset second]
- \titlepage
-\end{frame}
-\begin{frame}[typeset second]
- \frametitle{\translation{This is the frame title.|Dies ist der Titel des Rahmens.}}
- \begin{itemize}
- \item<1-> \translation{First|Erstens}.
- \item<2-> \translation{Second|Zweitens}.
- \item<3-> \translation{Third|Drittens}.
- \end{itemize}
- \translation{Do not use line-by-line uncovering.|Man sollte Text nicht
- Zeile f\"ur Zeile aufdecken.}
-\end{frame}
-\end{document}
-\end{verbatim}
-\end{beameroption}
-
-In the last of the above example, it is a bit bothersome that the
-option |typeset second| has to be added to each frame. The following
-option globally sets this option:
-\begin{beameroption}{always typeset second mode}{|=|\meta{true or false}}
- When this option is set to true, every following frame will have the
- option |typeset second| set to true.
-\end{beameroption}
-
-
-\subsection{Showing the Previous Slide on the Second Screen}
-
-\begin{beameroption}{previous slide on second screen}{|=|\meta{location}}
- This option causes the second screen to show the previous slide that
- was typeset, unless this is overruled by a frame with the
- |[typeset second]| option set. The idea is that if you have two
- projectors you can always present ``the last two'' slides
- simultaneously and talk about them.
-
- Using this option will switch off the updating of external files
- like the table of contents.
-\end{beameroption}
-
-
-
-%%% Local Variables:
-%%% mode: latex
-%%% TeX-master: "beameruserguide"
-%%% End: